Gareth Ennis and Caarlos Esquerra sounds like knock-off 2000 AD droids.
As for the book, the credits look odd. Simon Harrison only did one Dogs, scripted by Peter Hogan. Monsters was Ennis/Pugh, who I would have assumed would have made the cover. I imagine we’ll be getting that and Island of the Damned, along with a few other bits. Honestly, I wish they’d gone for a Durham Red book, with ‘Island’ and the recent reboot. Alas.
On Wagner, who knows? I don’t recall anything having been missed—bar the Starlord stuff. But wasn’t that off-limits to this collection?